Home / 639,103.89-882,282.97-397,464.31

Finding the Fourth Proportional to 639,103.89, 882,282.97 and 397,464.31

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Solution

The fourth proportional to 639,103.89, 882,282.97 and 397,464.31 is: 548,699.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,103.89 : 882,282.97 = 397,464.31 : x
  2. Step 2: Convert to fraction form
    639,103.89/882,282.97 = 397,464.31/x
  3. Step 3: Cross multiply
    639,103.89x = 882,282.97 × 397,464.31
  4. Step 4: Simplify right side
    639,103.89x = 350,675,991,895.80
  5. Step 5: Solve for x
    x = 350,675,991,895.80/639,103.89
  6. Step 6: Final answer
    x = 548,699.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.